Humans were dying.
If those twisted flesh and cell clusters sealed within the containers were, perhaps they could still be counted as human.
Even without any instruments, Hao Ren could tell that the pieces of flesh within the containers were slowly withering away. Something within their genes had mutated under the influence of the First Born's wrath, This change transcended time and space, affecting the "survivors" who managed to escape their homeworld. In truth, they did not survive. The extermination had already started, but its completion was delayed.
It seemed like true "survivors" like Holletta were a rare minority, and most civilizations simply could not escape the First Born's rampage.